Ore which had been lying in the wilds of Minnesota on Monday morning was thus brought to Pittsburgh and made into steel rails or bridges or structural shapes by Saturday night.
星期一早上一直躺在明尼苏达州荒野中的矿石就这样被运到匹兹堡，并在星期六晚上被制成钢轨或桥梁或结构形状。
Structural shapes
原声例句
大商业时代
英语百科
Structural steel
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5044.png)
Structural steel is a category of steel used as a construction material for making structural steel shapes. A structural steel shape is a profile, formed with a specific cross section and following certain standards for chemical composition and mechanical properties. Structural steel shapes, sizes, composition, strengths, storage practices, etc., are regulated by standards in most industrialized countries.
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